<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	private $_id;
	private $_role;
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
		
// 		$users=array(
// 			// username => password
// 			'demo'=>'demo',
// 			'admin'=>'admin',
// 		);
// 		if(!isset($users[$this->username]))
// 			$this->errorCode=self::ERROR_USERNAME_INVALID;
// 		elseif($users[$this->username]!==$this->password)
// 			$this->errorCode=self::ERROR_PASSWORD_INVALID;
// 		else
// 			$this->errorCode=self::ERROR_NONE;
// 		return !$this->errorCode;

		$user=User::model()->findByAttributes(array('username'=>$this->username));
		if($user===null)
		{
			$this->errorCode=self::ERROR_USERNAME_INVALID;
		}
		else 
		{
			if($user->password!==$user->encrypt($this->password))
			{
				$this->errorCode=self::ERROR_PASSWORD_INVALID;
			}
			else 
			{
				$this->_id=$user->id;
				///TODO: 读取登陆日志
				$this->errorCode=self::ERROR_NONE;
				
			}
		}
		return !$this->errorCode;
	}
}